Replacing an optical drive, Replacing, Optical – Lenovo ThinkCentre M55 User Manual
Page 34: Drive
5.
To
install
the
new
hard
disk
drive
into
the
blue
bracket,
flex
the
bracket
and
align
the
pins
1
through
4 on
the
bracket
with
the
holes
in
the
hard
disk
drive.
Do
not
touch
the
circuit
board
5
on
the
bottom
of
the
hard
disk
drive.
6.
Insert
the
new
hard
disk
drive
into
the
hard
disk
drive
mounting
bracket
with
its
circuit
board
side
facing
inward
and
snap
into
position.
7.
Connect
the
power
and
signal
cables
to
the
new
hard
disk
drive.
8.
Go
to
Replacing
an
optical
drive
Attention:
Do
not
remove
the
computer
cover
or
attempt
any
repair
before
reading
the
“Important
safety
information”
in
the
Safety
and
warranty
guide
that
was
included
with
your
computer
or
in
the
Hardware
Maintenance
Manual
(HMM)
for
the
computer.
To
obtain
copies
of
the
Safety
and
warranty
guide
or
HMM,
go
to
the
Support
Web
site
at
http://www.lenovo.com/
think/support.
1.
Remove
the
computer
cover.
See
Note:
For
this
procedure,
it
helps
to
lay
the
computer
on
its
side.
2.
Disconnect
the
signal
and
power
cables
from
the
rear
of
the
optical
drive.
26
Hardware
Replacement
Guide